<template>
  <a-card :bordered="false">

    <!-- 操作按钮区域 -->
    <div class="table-operator">
      <a-button @click="handleAdd" type="primary" icon="plus">新增</a-button>
      <!--<a-button type="primary" icon="download" @click="handleExportXls('分类字典')">导出</a-button>
      <a-upload
        name="file"
        :showUploadList="false"
        :multiple="false"
        :headers="tokenHeader"
        :action="importExcelUrl"
        @change="handleImportExcel">
        <a-button type="primary" icon="import">导入</a-button>
      </a-upload>-->
      <a-dropdown v-if="selectedRowKeys.length > 0">
        <a-menu slot="overlay">
          <a-menu-item key="1" @click="batchDel"><a-icon type="delete"/>删除</a-menu-item>
        </a-menu>
        <a-button style="margin-left: 8px"> 批量操作 <a-icon type="down" /></a-button>
      </a-dropdown>
    </div>

    <!-- table区域-begin -->
    <div>
      <div class="ant-alert ant-alert-info" style="margin-bottom: 16px;">
        <i class="anticon anticon-info-circle ant-alert-icon"></i> 已选择 <a style="font-weight: 600">{{ selectedRowKeys.length }}</a>项
        <a style="margin-left: 24px" @click="onClearSelected">清空</a>
      </div>

      <a-table
        ref="table"
        size="middle"
        rowKey="id"
        :columns="columns"
        :dataSource="dataSource"
        :pagination="ipagination"
        :loading="loading"
        :expandedRowKeys="expandedRowKeys"
        @change="handleTableChange"
        @expand="handleExpand">

        <span slot="action" slot-scope="text, record">
          <a @click="handleEdit(record)" v-if="actionCategoryLevel(record.categoryLevel)">编辑</a>
          <a-divider type="vertical" v-if="actionCategoryLevel(record.categoryLevel)" />
          <a-popconfirm title="确定删除吗?" @confirm="() => doDelete(record.id)">
            <a v-if="actionCategoryLevel(record.categoryLevel)">删除</a>
          </a-popconfirm>
          <a-divider type="vertical" v-if="actionCategoryLevel(record.categoryLevel)" />
          <a @click="handleAddSub(record)">添加下级</a>
          <a-divider type="vertical" v-if="actionCategoryLevel(record.categoryLevel)" />
          <a @click="categoryConfigRule(record)" v-if="actionCategoryLevel(record.categoryLevel)">配置规则</a>
        </span>

      </a-table>
    </div>

    <sysCategory-modal ref="modalForm" @ok="modalFormOk"></sysCategory-modal>
    <sysCategory-rule-modal ref="modalFormRule" @ok="modalFormRuleOK" ></sysCategory-rule-modal>
  </a-card>
</template>

<script>

  import { JeecgListMixin } from '@/mixins/JeecgListMixin'
  import SysCategoryModal from './modules/SysCategoryModal.vue'
  import SysCategoryRuleModal from './modules/SysCategoryRuleModal.vue'
  import { api, getCategoryRootList, getCategoryChildList, getCategoryChildListBatch } from './service.js'
  import { apiUrl } from '@/api/api.js'
  import { IS_TENANT_ADMIN } from '@/store/mutation-types';
  import Vue from 'vue';

  export default {
    name: 'SysCategoryList',
    mixins: [JeecgListMixin],
    components: {
      SysCategoryModal,
      SysCategoryRuleModal
    },
    data () {
      return {
        description: '分类字典管理页面',
        // 表头
        columns: [
          {
            title: '分类名称',
            align: 'left',
            dataIndex: 'name'
          },
          {
            title: '分类编码',
            align: 'left',
            dataIndex: 'code'
          },
          {
            title: '分类级别',
            align: 'left',
            dataIndex: 'categoryLevel_dictText'
          },
          {
            title: '操作',
            dataIndex: 'action',
            align: 'center',
            scopedSlots: { customRender: 'action' }
          }
        ],
        url: {
          list: api.list,
          delete: '',
          deleteBatch: api.deleteBatch
        },
        expandedRowKeys: [],
        hasChildrenField: 'hasChild',
        pidField: 'pid',
        dictOptions: {
        },
        subExpandedKeys: [],
         /* 排序参数 */
        isorter: {
          column: 'sort,createTime',
          order: 'desc'
        }
      }
    },
    computed: {
      importExcelUrl() {
        return apiUrl.importExcelUrl(this.url.importExcelUrl);
      },
      tableProps() {
        let _this = this
        return {
          // 列表项是否可选择
          rowSelection: {
            selectedRowKeys: _this.selectedRowKeys,
            onChange: (selectedRowKeys) => _this.selectedRowKeys = selectedRowKeys
          }
        }
      }
    },
    methods: {
      loadData(arg) {
        if (arg === 1) {
          this.ipagination.current = 1
        }
        this.loading = true
        let params = this.getQueryParams()
        return new Promise((resolve) => {
          getCategoryRootList(params).then(res => {
            if (res.success) {
              let result = res.result
              if (Number(result.totalRows) > 0) {
                this.ipagination.total = Number(result.totalRows)
                this.dataSource = this.getDataByResult(res.result.rows)
                // update--begin--autor:lvdandan-----date:20201204------for：JT-31 删除成功后默认展开已展开信息
                return this.loadDataByExpandedRows(this.dataSource)
                // update--end--autor:lvdandan-----date:20201204------for：JT-31 删除成功后默认展开已展开信息
              } else {
                this.ipagination.total = 0
                this.dataSource = []
              }
            } else {
              this.$message.warning(res.message)
            }
          }).finally(() => {
            this.loading = false
          })
        })
      },
      getDataByResult(result) {
        return result.map(item => {
          // 判断是否标记了带有子节点
          if (item[this.hasChildrenField] === '1') {
            let loadChild = { id: item.id + '_loadChild', name: 'loading...', isLoading: true }
            item.children = [loadChild]
          }
          return item
        })
      },
      handleExpand(expanded, record) {
        // 判断是否是展开状态
        if (expanded) {
          this.expandedRowKeys.push(record.id)
          if (record.children.length > 0 && record.children[0].isLoading === true) {
            let params = this.getQueryParams();// 查询条件
            getCategoryChildList(record.id, params).then((res) => {
              if (res.success) {
                if (res.result && res.result.length > 0) {
                  record.children = this.getDataByResult(res.result)
                  this.dataSource = [...this.dataSource]
                } else {
                  record.children = ''
                  record.hasChildrenField = '0'
                }
              } else {
                this.$message.warning(res.message)
              }
            })
          }
        } else {
          let keyIndex = this.expandedRowKeys.indexOf(record.id)
          if (keyIndex >= 0) {
            this.expandedRowKeys.splice(keyIndex, 1);
          }
        }
      },
      initDictConfig() {
      },
      modalFormOk(formData, arr) {
        if (!formData.id) {
          this.addOk(formData, arr)
        } else {
          this.editOk(formData, this.dataSource)
          this.dataSource = [...this.dataSource]
        }
      },
      editOk(formData, arr) {
        if (arr && arr.length > 0) {
          for (let i = 0; i < arr.length; i++) {
            if (arr[i].id === formData.id) {
              arr[i] = formData
              break
            } else {
              this.editOk(formData, arr[i].children)
            }
          }
        }
      },
      async addOk(formData, arr) {
        if (!formData[this.pidField]) {
          this.loadData()
        } else {
          this.expandedRowKeys = []
          for (let i of arr) {
            await this.expandTreeNode(i)
          }
        }
      },
      expandTreeNode(nodeId) {
        return new Promise((resolve, reject) => {
          this.getFormDataById(nodeId, this.dataSource)
          let row = this.parentFormData
          this.expandedRowKeys.push(nodeId)
          let params = this.getQueryParams();// 查询条件
          getCategoryChildList(nodeId, params).then((res) => {
            if (res.success) {
              if (res.result && res.result.length > 0) {
                row.children = this.getDataByResult(res.result)
                this.dataSource = [...this.dataSource]
                resolve()
              } else {
                row.children = ''
                row.hasChildrenField = '0'
                reject()
              }
            } else {
              reject()
            }
          })
        })
      },
      getFormDataById(id, arr) {
        if (arr && arr.length > 0) {
          for (let i = 0; i < arr.length; i++) {
            if (arr[i].id === id) {
              this.parentFormData = arr[i]
            } else {
              this.getFormDataById(id, arr[i].children)
            }
          }
        }
      },
      handleAddSub(record) {
        this.subExpandedKeys = [];
        this.getExpandKeysByPid(record.id, this.dataSource, this.dataSource)
        this.$refs.modalForm.subExpandedKeys = this.subExpandedKeys;
        this.$refs.modalForm.title = '添加子分类';
        this.$refs.modalForm.edit({ 'pid': record.id, 'fillRuleId': record.fillRuleId });
        this.$refs.modalForm.disableSubmit = false;
      },
      doDelete: function (id) {
        this.url.delete = api.delete(id);
        this.handleDelete(id);
      },
      // 添加子分类时获取所有父级id
      getExpandKeysByPid(pid, arr, all) {
        if (pid && arr && arr.length > 0) {
          for (let i = 0; i < arr.length; i++) {
            if (arr[i].id === pid) {
              this.subExpandedKeys.push(arr[i].id)
              this.getExpandKeysByPid(arr[i]['pid'], all, all)
            } else {
              this.getExpandKeysByPid(pid, arr[i].children, all)
            }
          }
        }
      },
      // 根据已展开的行查询数据（用于保存后刷新时异步加载子级的数据）
      loadDataByExpandedRows(dataList) {
        if (this.expandedRowKeys.length > 0) {
          return getCategoryChildListBatch({ parentIds: this.expandedRowKeys.join(',') }).then(res => {
            if (res.success && res.result.length > 0) {
              // 已展开的数据批量子节点
              let records = res.result
              const listMap = new Map();
              for (let item of records) {
                let pid = item[this.pidField];
                if (this.expandedRowKeys.join(',').includes(pid)) {
                  let mapList = listMap.get(pid);
                  if (mapList == null) {
                    mapList = [];
                  }
                  mapList.push(item);
                  listMap.set(pid, mapList);
                }
              }
              let childrenMap = listMap;
              let fn = (list) => {
                if (list) {
                  list.forEach(data => {
                    if (this.expandedRowKeys.includes(data.id)) {
                      data.children = this.getDataByResult(childrenMap.get(data.id))
                      fn(data.children)
                    }
                  })
                }
              }
              fn(dataList)
            }
          })
        } else {
          return Promise.resolve()
        }
      },
      /**
       * 系统级的只能超级管理员修改，其他用户无法修改
       */
      actionCategoryLevel(level) {
       return (level !== 1) || (level === 1 && Vue.ls.get(IS_TENANT_ADMIN));
      },
      /**
       * 配置规则
       */
      categoryConfigRule(record) {
        this.$refs.modalFormRule.title = '配置规则';
        this.$refs.modalFormRule.edit({ 'categoryId': record.id, 'name': record.name, 'code': record.code, 'fillRuleId': record.fillRuleId, 'id': record.categoryRuleId });
        this.$refs.modalFormRule.disableSubmit = true;
      },
      modalFormRuleOK(formData) {
        this.updateCode(formData, this.dataSource)
        this.dataSource = [...this.dataSource]
      },
      updateCode(formData, arr) {
        if (arr && arr.length > 0) {
          for (let i = 0; i < arr.length; i++) {
            if (arr[i].id === formData.categoryId) {
              arr[i].code = formData.code
              arr[i].fillRuleId = formData.fillRuleId
              break
            } else {
              this.updateCode(formData, arr[i].children)
            }
          }
        }
      }

    }
  }
</script>
<style scoped>
  @import '~@assets/less/common.less';
</style>
